The Golang Defer Problem (https://play.golang.org/p/5e5fF130MX)

defer_problem.go

package main

import (
	"sync"
	"fmt"
)

func main() {
	defer func() {
		fmt.Println("If you see this then success!")
	}()
	go func() {
		panic("whelp")
	}()
	deadlock := sync.Mutex{}
	deadlock.Lock()
	deadlock.Lock()
}